Governor for steam engines



May 15, 1923.

"M.' BRUNET GOVERNOR FOR STEAM ENGINES Filed A112. 17. 1921 2 Sheets-Sheet 1 Patented May 15, 1923. i

- MAURICE Banner, on

'Govnnnon non STEAM nnerivns.

Application filed AugustlY, 192i. semi n, 493,107."

(GRANTED UNDER THE rnovrsrons or THE Aer OFMARGH 3,1921, 41 sear. L.,'-e1s.

' 1 T aZZ whom it may concern:

Be it known that I, MAURICE BRUNnr, a

' provements in Governors for Steam Engines, for which I have filed applications in France, March 2d, 1920, Patent No. 511017; in Italy, April 30th, 1921, application No. 302/1642; England, April22d, 1921, Patent No; 178,331; Germany, March 24th, 1921, application No. 55 962; and in Belgium lvlarch 22d, 1921, Patent No. 295' 316; and of which the followingis a specification.

The present invention relates to improvements in governors for steam engines, and has more particularly for its object to provide an improved governor, mounted on the crank-shaft, of the type which acts auto'-. matically, under the, efiect of centrifugal force, not only on the admission of steam in the cylinder or cylinders, but also, through the medium of a suitable bandbrake, on the crank-shaft itself.

The automatic governorform ing the subject matter of the present invention mainly comprises a hub keyed on the crank-shaft and provided with two radial arms on which are mounted so as to be able to slide radially, two jaws which tend to move away from the shaft under the action of centrifugal force and against the action of suitable springs, and one'of the faces of which is provided with a-circnlar groove of suitable section to engage a'gainstthe inclined edge of a circular crown in such a way that, when the jaws tend to move away from the shaft, they cause a motion of the said crown in the direction of the longitudinal axis of the said shaft, the said crown acting in this manner on rollers forming the ends of-arms solid with a rod which, through the medium of suitable organs, controls the admission of steam and the operation of a band-brake acting on the crank-shaft; a

The accompanying drawing shows, by way of example only, an embodiment of a governor according to the present invention.

I r u compound type, citizen of the French Republic, residing at Fig. 1 being a side view showing the said governor appliedto a steam' engine of the Fig. 2 being a corresponding horizontal section, and

3"being a sectional elevation on the lin'e A-B ofFig. 1. v

Asmay be seen from LIEGE, BELGIUM, Assrenoar'o MAISON DETILLEUX, soorr'rrn ANONYIVIE, or Linen, BELGIUM. i v

the drawings, on the crank-shaft 1 is keyed a hub 2, bearing two radial arms 3 on which are mounted s0 as to be able toslide radially two jaws "4;,

of which the faces are circular but the,

transverse section is "Ll-shaped These jaws tend to move away, from the shaft'l andto compress the return springs ,5 under the 65. automatic motion, a crown-(Shaving a ciraction of centrifugaliforces Throughthis cular edge inclined in relation-to the longitudi-nal axis of the shaft 1 :and adapted to engage against. the correspondingly inclined part of a circular groove of suitable section provided on oneof the face's'of-ea'ch jaw 4, is forced, owing to therelative motion of the said inclined parts, to move in the direction of the longitudinal axis of the shaft 1, r

and in this way acts on arms 8 solid with a rod 9 and provided with rollers 10 allowingtheir ends to bear against thecrownfi'.

ofthe crank 11, the admission of steamiin the cylinder the engine. 'Moreover this rod is provided with a crank 12 which is pivotallyj securedto one end of a link13 The rod 9 iniits turn controls,fby means. i

having its other end connected piv otally to j a bracket 14 cast-on a cam 15 adapted to 1 rotate on a bar 16 when the crank 12 is operated by the rod 9. The said bar '161is at one of its ends connected by a link 18 to one end of aband brake 19 and ismaintained in the required position by means 90,

of a sleeve-bearing 17 cast on the body of the engine and in which'the barIl6 is able to slide. One of the ends of the cam '15 is inclined in relation to the longitudinal axis of the bar 16 and engages with the adjacent end of a cam 20 keyed on the end of the bar 16 opposed to that which isIconnected' to the end of the band-brake 19. The rem: tion of the can115 thus forces the cam 20 to move away from;the'sleeve-bearing 17 in the direction of the longitudinal axis of ju's tment required to compensate the wear oi" the brake to be effected readily; a lock-nut 26 is provided to keep rod 22 screwed tight in the sleeve 24*; I A spring 27 arranged between the crown 6 and the body of the engine tends to keep the said crown in the normal position which it occupies when the engine is not running. This spring, as may be seen from F 2, .is coiled round a pin fixed to the engine casing and engaging a corresponding female boss of the crow 6,'so

that the latter, although able to slide along the hub2, is not able to rotate with the jaws 4-.

It must be understood that the details of execution and the relative positions of the various organs constituting the present invention maybe modified without departing from the principle or the scope 'ofthe said 7 invention;

1 am aware that prior to my present invention governors for engines have been constructed which were based on the general combination of a centrifugally controlled element foractuating both a brake and a throttle; 1 therefore do not claim such a combination broadly; but- I claim:

1. in a governor for steam engines, or" the type wherein a centriiugally operated hand brake acts directly on the crank-shaft, said brake having one end of the brake band adjustably s cured to the engine casing, a bar slidably mounted'in a bearing of the engine casing, and having at one end a link connection with the other end of the brake band, a cylindrical fixed cam and a cylindrical rotatable cam mounted end to end on said bar between anut on the other end thereof and the aforesaid bearing and having their contacting surfaces in a plane passing diagonally through the longitudinal axis of such bar, a brake-operating rod rotatably mounted in bearings of the engine casing at right angles tothe crankshaft, and an operative crank and pivoted link connection between said rod and the aforesaid, ro-

tatable cam, i combination with:' a hub keyed on the crank-shaft and having a pairof radial arms, a pair of opposed semi-circularjaws slidably mounted on said arms,

compression springs between the freeencls of said arms and the aws, exertlng a rad al pressure towards the hub on said jaws, a cir-" mounted on the aforesaid hub and having,

an inclined peripheral flange inoperative facial. engagement with said clrcular sloping surface, and means for causlng the aforesaid brake-operating rod to berotateil by the movement of the said crown along the hub, substantially as described. I p

p 2, In a governor for steam-engines, according to claim 1, means for causing the brakebperating rod to be rotated by. the

movement of the crown along the hub, consisting of apair of solid radial arms ofsaiu 'rod having their free ends fitted with a roller in operative contact with the, outer face of said crown, substantially as described.

8. In a governor for steam engines, accordlng to claim 1, a crank secured on the brake-operating rod and havlng its free end operatively connected tothe valve controldescribed. p In testimony thereof I have signed hereling the admission of steam, substantially as unto my name in the'presence of two subv scribing witnesses;

MAURICE Banner \Vitnesses CURTIS "T. EVERETT, r A, hoBLER. 

